| 摘要 |
PURPOSE:To surely join a tube 1 and a header 2 by brazing to a hermetic state. CONSTITUTION:A cylindrical body 18 for hermetic brazing is inserted and disposed in a fit state into a tube insertion hole 15 of the header 2. The end of the tube 1 for heat exchange projected with curved projecting lines 12 within the tube is inserted and disposed into the cylindrical body 18 for hermetic brazing in the state of fitting to the outer periphery. The head 2 and the cylindrical body 18 for hermetic brazing as well as the cylindrical body 18 for hermetic brazing and the tube 1 are joined and integrated by brazing. |
